Cannon mg6650 printer,i have in error change the screen display

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Press the HOME button and wait for about 5 seconds.
Flick the HOME screen, then tap Setup (looks like a screw driver and pliers).
Using the Operation Panel
Tap Device settings (looks like 2 lines with 2 dots on them).
Tap the fifth setting item from the top.
Tap the language for the touch screen.
If this did not work, please come back and let me know what happened when you tried it by clicking on reply to expert so we can continue.
If it did work, please don’t forget to leave a positive rating by clicking the stars/smileys - it is greatly appreciated.

That does not sound like it, please start over pressing the home button.
Maybe these will help, Here is a picture of the setup icon:
http://ugp01.c-ij.com/ij/webmanual/Manual/W/MG6600%20series/EN/UG/screens/settings.jpg
Here is a picture of the device settings icon:
http://ugp01.c-ij.com/ij/webmanual/Manual/W/MG6600%20series/EN/UG/screens/device_settings.jpg
If the same thing happens depending on firmware you may have more menu options here.
Normally it is the 5th from the top and will show a list of languages.
If you do not see that go back and try a different option, like the 4th or 6th from the top.
If this did not work, please come back and let me know what happened when you tried it by clicking on reply to expert so we can continue.
If it did work, please don’t forget to leave a positive rating by clicking the stars/smileys - it is greatly appreciated.